Python中多线程的创建及基本调用方法

print "=======================thread.start_new_thread启动线程=============" 
import thread 
#Python的线程sleep方法并不是在thread模块中，反而是在time模块下 
import time 
def inthread(no,interval): 
 count=0 
 while count<10: 
 print "Thread-%d,休眠间隔：%d,current Time:%s"%(no,interval,time.ctime()) 
 #使当前线程休眠指定时间，interval为浮点型的秒数，不同于Java中的整形毫秒数 
 time.sleep(interval) 
 #Python不像大多数高级语言一样支持++操作符，只能用+=实现 
 count+=1 
 else: 
 print "Thread-%d is over"%no 
 #可以等待线程被PVM回收，或主动调用exit或exit_thread方法结束线程 
 thread.exit_thread() 
#使用start_new_thread函数可以简单的启动一个线程,第一个参数指定线程中执行的函数，第二个参数为元组型的传递给指定函数的参数值 
thread.start_new_thread(inthread,(1,2)) 
 #线程执行时必须添加这一行，并且sleep的时间必须足够使线程结束，如本例 
 #如果休眠时间改为20，将可能会抛出异常 
time.sleep(30) 
''' 

Unhandled exception in thread started by 
Error in sys.excepthook: 
Original exception was: 

import thread; 
from time import sleep,ctime; 
from random import choice 
#The first param means the thread number 
#The second param means how long it sleep 
#The third param means the Lock 
def loop(nloop,sec,lock): 
 print "Thread ",nloop," start and will sleep ",sec; 
 sleep(sec); 
 print "Thread ",nloop," end ",sec; 
 lock.release(); 
 
def main(): 
 seconds=[4,2]; 
 locks=[]; 
 for i in range(len(seconds)) : 
 lock=thread.allocate_lock(); 
 lock.acquire(); 
 locks.append(lock); 
 
 print "main Thread begins:",ctime(); 
 for i,lock in enumerate(locks): 
 thread.start_new_thread(loop,(i,choice(seconds),lock)); 
 for lock in locks : 
 while lock.locked() : 
 pass; 
 print "main Thread ends:",ctime(); 
 
if __name__=="__main__" : 
 main();